Sennheiser IE 300 in-ear headphone review: Stellar performance is the name of this game

I greatly admire Sennheiser headphones—I’ve had a classic on-ear HD 414 SL in my recording studio for 40 years. These days, the company also makes in-ear headphones (IEHs), including the IE 300, which was introduced at CES 2021. When I learned about the IE 300 last January, I was excited to check it out. Now that I